refactoring; modal window init

src/ui/widget/dialogue.h

@@ -0,0 +1,18 @@
+#ifndef DIALOGUE_H
+#define DIALOGUE_H
+
+#include <ncurses.h>
+#include "../widget.h"
+#include "button.h"
+
+typedef struct {
+  WINDOW *win;
+  widget_t w;
+  button_t *buttons; // ! should be NULL-terminated
+} dialogue_t;
+
+dialogue_t *init_dialogue(char title[]);
+int32_t draw_dialogue(dialogue_t *d, uint32_t cur_x, uint32_t cur_y);
+void destroy_active_dialogue(dialogue_t *d);
+
+#endif